Home / 39,976.96-55,167.32-21,827.06

Finding the Fourth Proportional to 39,976.96, 55,167.32 and 21,827.06

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Solution

The fourth proportional to 39,976.96, 55,167.32 and 21,827.06 is: 30,120.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,976.96 : 55,167.32 = 21,827.06 : x
  2. Step 2: Convert to fraction form
    39,976.96/55,167.32 = 21,827.06/x
  3. Step 3: Cross multiply
    39,976.96x = 55,167.32 × 21,827.06
  4. Step 4: Simplify right side
    39,976.96x = 1,204,140,403.68
  5. Step 5: Solve for x
    x = 1,204,140,403.68/39,976.96
  6. Step 6: Final answer
    x = 30,120.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.